Means for winding flexible material



MaI'Ch 1929- J. A. CAMERON MEANS FOR WINDING FLEXIBLE MATERIAL Filed July 28, 1.926 5 Sheets-Sheet 1 IN VENT OR A TTORNE Y March 26, 1929. J. A. CAMERON 1,707,047

MEANS FOR WINDING FLEXIBLE MATERIAL Filed July 28, 1926 5 sheets-sheet 2 IN VENT OR A TTORNE Y March 26, 1929. J. A. CAMERON MEANS FOR WINDING FLEXIBLE MATERIAL Filed July 28, 1926 5 Sheets-Sheet March 26, 1929.

J. A. CAMERON 1,707,047

MEANS FOR WINDING FLEXIBLE MATERIAL Filed July 28, 1926 5 Sheets-Sheet 4 ATTORNEY March 26, 1929. J CAMERQN 1,707,047

MEANS FOR WINDING FLEXIBLE MATERIAL Filed July 28. 1926 5 Sheets-Sheet 5 ATTORNEY Patented Mar. 26, 1929.

UNITED STATES PATENT OFFICE.

JAMES A. CAMERON, OF BROOKLYN, NEW YORK, ASSIGNOR TO CAMERON MACHINE COMPANY, OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

MEANS FOR WINDING FLEXIBLE MATERIAL.

Application filed July 28,

This invention relates to means for winding flexible material and has for ltS main objects the production of more unlformly wound rolls than it has heretofore been possible. to obtain, and the lessening of the strain to which parts of the machine are subjected during the winding action.

In the accompanying drawings the invention is disclosed in several concrete and preferred forms in which Fig. 1 is a more or less diagrammatic view in side elevation of a winding machine embodying one form of the invention, the parts being shown at the beginning of the winding operation.

Fig. 2 is a view similar to Fig. 1, but with the parts shown in the position they occupy at the end of the winding operation.

Fig. 3 is a detail perspective view of a portion of the counterweighting mechanism.

Fig. 4 is a sectional view substantially on the plane of line H of Fig. 3.

Fig. 5 is a detail View, in front elevation, of the top pressure roll and adjacent ele- 'ments, .partly broken away and in section,

showing an alternate or modified form of the invention that may be used independently of or in conjunction with other forms of the invention.

Fi 6 is a horizontal sectional view substantially on the plane of line 6-6 of Fig. 5.

Fig. 7 is a vertical sectional view substant-ially on the plane of line 7-7 of Fig. 5.

Fig. 8 is a diagrammatic side elevation of a winding machine showing a second modification of the invention.

Fig. 9 is a view of the parts shown in Fig. 8, looking in the direction of arrow 9, Fi .8.

Fig. 10 is a view similar to Fig. 8 showing the osition of the parts at the end of the winding operation.

Fig. 11 is a diagrammatic side elevation showing a still further modified form of the invention.

Fig. 12 is a detail view of an adjusting device capable of being used in connection with the modification shown in Figs. 5, 6 and 7.

Fig. 13 is a horizontal sectional view substantially on the plane of line 13- 13 of 1926. Serial No. 125,350.

1 rest-s and by means of which it is driven. I11 the present instance two driven drmns 2 and 3 are employed, which drums are spaced apart and rotate in the same direction, the winding shaft being in the valley between the drums. 4 is a rider roll or top pressure roll which may or may not be driven. Slitting means, it any be employed, may take any form, and may be associated with one of the drums or with the top pressure roll, but, as here shown, they are indicated diagrammatically at 5 and they may be either shear-eut or score-cut slitters. The winding shaft and the top pressure roll are displaced by the material accumulating on the winding shaft, being slidably mounted on the framework in a manner Well understood.

One feature of the invention resides in a particular counterweighting device that may be applied either to the top pressure roll or to the winding shaft or to both; said top pressure roll and said winding shaft being referred to herein by the generic term: a member displaceable by accumulation of wound material. This feature involves the employment of a curved element and a counterweight, flexibly carried, that travels over said curved element is response to the displacement of the member to thereby increase the eounterweighting action as wound material accumulates, there bein a connection between the member and t e weight. The advantages of this construction are manifold and will reveal themselves as the specification proceeds. The curvedelement may be stationary or movable; in the present case it is a revoluble element and is indicated at 6. The counterweight is flexibly carried to adapt itself to travel over the curved element and may consist of one or more weight parts; in the present case there is utilized a main weight indicated at 'Z and auxiliary weights indicated at 8. Suitable connections, between member 4 and the weight, are em- 1 ployed, here taking the form of cables or chains 9. In the particular form in which the invention is here clothed the curved element is a revoluble sprocket wheel and the chains are sprocket chains passing over the sprocket wheel, said chains supporting the weights and connected to member 4. The arrangement is here in duplicate, there being one set of connections at each side of the machine as will be understood. The weight is capacitated, in its travel over the curved element, to increase its counter-weighting action. This is accomplished, in this instance, by weights 8 traveling over the to of sprocket Gso that as the top pressure r0 1 is displaced upwardly, due to accumulation of material on the winding shaft, the resistanee to the upward thrust of said top pres sure roll decreases as weights 8 pass over sprocket 6 as will be evident from a comparison of Figs. 1 and 2. In the form of the invention here shown, auxiliary counterweights 8 may be carried on cable or chain 9 in the manner indicated in Figs. 3 and 4. As there shown, each link 10 of the chain is adapted to receive bifurcated end 11 of a weight part and a bolt 12 secures the weight part in position on the link.

he construction of counterweight disclosed is capable of being utilized not merely in connection with the top pressure roll but may also be applied to the winding shaft. As shown in Figs. 1 and 2, winding shaft carriage 13 is slidable on the framework and is connected to an endless chain 14 that passes over sprockets 15 and 16 and on the shaft 17 of the latter is another sprocket 18 to which it attached a cable or chain 19 having, at its free end, main counterweight 20 and having also auxiliary weight parts 21 that pass from one side of sprocket 18 to the other as wound material on the winding shaft accumulates thereby rendering the counterweighting action increasingly -effective.

In Figs. 8, 9 and 10 is shown another method of utilizing the counterweight in connection with the top pressure roll. Here, in addition to the parts already described, there extends a cable 22 from weight 7 and this cable passes over a sheave 23, on the shaft 2st of which is a flexible member 25 carrying Weight parts 26 that become increasingly effective as the top pressure roll rises. The advantage of this particular arrangement is that, in very large machines, it may not always be feasible or desirable to have the counterweighting mechanism carried exclusively by the machine and therefore, as here shown, part thereof may be located say in the cellar.

A still further modification is shown in Fig. 11 in which weight 7 has connected thereto a cable 27 passing over idler 28 to sheave 29 which latter is connected to a wheel 30 provided with a flexible member 31 carrying weight parts 32. In this case also the counterweighting action becomes increasingly effective. It will be seen that, in this instance, weight parts 32 are carried by a framework 33 not forming a part of the machine proper, and this device may therefore be located in a room different from that occupied by the machine itself.

Somuch for the construction of the terials, torelieve thepressure on the surface of the material somewhat in order that said surface may not be crushed or torn. The theory that underlies the counterweighting of the top pressure roll in the manner shown herein is entirely different and this difference is robably the reason that it has not heretofdre been attempted to. counterweight the top pressure roll.

Paper rolls having soft cores are very undesirable for many reasons that need not be gone into here. Top pressure rolls are therefore utilized during the winding action, and it has been the custom to make them heavy enough to insure a tight or hard winding of the inner convolutions of the paper roll. But it has not heretofore been realized that the top pressure roll, in a sense, defeats itself, because as wound material accumulates the pressure under which the winding action takes place likewise increases, so that, owing to the supcrhardness of the outer convolutions of the wound material, the core is relatively soft.

It will now be understood that to diminish the weight of the top pressure roll as wound material accumulates on the winding shaft will tend to produce a roll of paper that is of more nearly uniform hardness than heretofore, and it is believed that this feature marks an important step of advance in the art. It will be observed, from the detailed description already given, that, as wound material accumulates on the winding shaft, the weight of the top pressure roll becomes less and less effective and that this action takes place automatically. Indeed, if desired, the decrease in effectiveness of the top pressure roll can be calculated to a nicety and the progressive shifting of auxiliary weights 8 can be predicated upon the increase in weight of the rewound material rather than upon a mere increase in diameter thereon. To effect this, weights 8 may be so spaced onthe chain that equal increments of the diameter of the wound material produces increasingly greater increments of displaced weights, or as shown in Fig. 1, said weights 8 may be equally spaced but graduated as to size.

I do not wish to be limited to the precise means shown in carrying out the invention pressure thereon, and means, controlled by the accumulation of material on the Winding shaft, to decrease the pressure of the top pressure roll with respect to said windlng shaft.

10. A winding machine including: a winding shaft, surface winding means coacting' with said winding shaft, a top pressure roll coaeting with said winding shaft to exert pressure thereon, and a counterweightv for the top pressure roll that becomes increasingly effective as material accumulates on the winding shaft.

11. A winding machine including: a winding shaft, surface winding means coacting with said winding shaft, a top pres sure roll coacting with said winding shaft to exert pressure thereon, and a counterweight for the top pressure roll that acts first to accentuate the weight of the top pressure roll, and then, as material accumulates on the winding shaft, to decrease the pressure of said top pressure roll.

12. A winding machine including: a winding shaft, surface winding means coacting with said winding shaft, a top pressure roll coacting with said winding shaft to exert pressure thereon, a main counterweight for the top pressure roll to decrease the pressure thereof, and an auxiliary counterweight for the top pressure roll that acts first to accentuate the weight of the top pressure roll, and then, as material accumulates on the Winding shaft, to decrease the pressure of said top pressure roll.

13. A Winding machine including: a

winding shaft, surface winding means coacting with said winding shaft a top pressure roll coacting with said winding shaft to exert pressure thereon, a movable counterweight for the top pressure roll capacitated to become more and more effective as it travels under the influence of accumulation of material on the winding shaft, and connections between the top ressure roll and said counterweight to a mit of such travel.

14. A winding machine including: a Winding shaft displaceable by the accumulating material, surface winding means to coact with said winding shaft, a top pressure roll displaceable with said winding shaft to exert pressure thereon, and means to resist the displacement of the top pressure roll at a gradually decreasing rate governed by the accumulation of material on the winding shaft.

15. A winding machine including: a

winding shaft displaceable by the accumu-- lating material, surface winding means to coact with said winding shaft, a top pressure roll, displaceable with said winding shaft to exert pressure thereon, and means to resist the displacement of the top pressure roll at a radually decreasing rate in proportion to t e increase in weight due to the accumulation of material on the winding shaft.

Signed at New York, in the borough of Brooklyn, county of Kings, and State of New York, this 16th day of July, 1926.

JAMES A. CAMERON.

relating to counter-weighting the top pressure roll since widely different means may be employed. Thus in Figs. 5, 6 and 7 is shown a means for offering less and less.

resistance to the rise of the top pressure roll, which means may be used independently of or in conjunction with the means previously described. As there shown carriage 34 carrying the top pressure roll 1s slidable on guides 35 of the framework. This carriage is supported by chains as before. Carried by the guides are brackets 36 provided with taper brake or retarding sur faces 37, the taper being outward as the surfaces extend upward. These surfaces may, of course, extend any distance desired. Carried by carriage 34 are springs 38 to engage the brake surfaces and it will be understood that the cooperation of the surfaces and springs retard or offer resistance to the top pressure roll as it rises, and that this resistance decreases as the top pressure roll rises in response to an increase in the amount of wound material on the winding shaft.

In Figs. 12 and 13 is shown a modification of this invention in that brake surfaces 37 are pivotally supported at 39 and are normally urged outward by springs 40, there being an adjusting screw 41 to adjust the amount of taper desired.

The taper friction means disclosed in Figs. 5, 6, 7, 12 and 13 are not claimed specifically herein but form the subject matter of an application Ser. N 0. 314,860, filed October 25, 1928.

I claim:

1. In a winding machine, a member displaceable by accumulation of wound material, and. counterweighting means for said membe including: a curved element, a counterweight, flexibly carried, to travel over said curved element in response to the displacement of the member to thereby in crease the counterweighting action as wound material accumulates, .and connections between the member and the weight.

2. In a winding machine, a member displaceable by accumulation of wound material, and counterweighting means for said member including: a' curved element, a main weight tending to constantly counterweight the member, an auxiliary weight to travel over said curved element in response to the displacement of the member to thereby increase the counterweighting action as wound material accumulates, and connections between the member and the weights.

3. In a winding machine, a top pressure roll displaceable by accumulation of wound material, and counterweighting means for said roll including: a curved element, a counterweight, flexibly carried, to travel over said curved element in response to the displacement of the roll to thereby increase displacement of the roll to thereby increase the counterweighting action as wound material accumulates, and connections between the roll and the weights.

5. In a winding machine, a member displaceable by accumulation of wound material, and counterweighting means for said member including: a revoluble element, weights, flexibly carried, to travel over said revoluble element from one side to the other in response to the displacement of the member to thereby increase the counter-weighting action as wound material accumulates, and connections between the member and the weights.

6. In a winding machine, a member displaccuble by accumulation of wound material, and counterweighting means for said member including: a revoluble element, a main weight tending to constantly counterweight the member, auxiliary weights, flexibly carried, to travel over said revoluble element from one side to the other in response to the displacement of the member to thereby increase the counterweighting action as wound material accumulates, and connections between the member and the weights.

7. In a winding machine, a top )ressure roll displaceable by accumulation o wound material, and counterweighting means for said roll including: a revoluble element, weights, flexibly carried, to travel over said revoluble element from one side to the other in response to the displacement of the roll to thereby increase the counterwei hting action as wound material accumu ates, and connections between the member and the weights.

8. In a winding machine, a top ressure roll displaceable by accumulation o wound material,.and counterwcighting means for said roll including: a revoluble element, a main weight tending to constantly counterweight the roll, auxiliary weights, flexibl carried, to travel over said revoluble element from one side to the other in response to the displacement of the roll to thereby increase the counterwcightin action as wound material accumulates, ant? connections between the member and the weights.

9. A windin machine including: a wind ing shaft, surIace winding means coacting with said winding shaft, atop pressure roll coacting with said winding shaft to exert 

